Solutions by everydaycalculation.com
1st number: 3 3/4, 2nd number: 16 0/4
154 - 644 is -494.
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Related: 30/4-64/4 15/8-64/4 15/4-64/8 45/4-64/4 15/12-64/4 15/4-64/12 75/4-64/4 15/20-64/4 15/4-64/20 15/28-64/4 15/4-64/28
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